Cardboard box



L. D. YOUNG CARDBOARD BOX Aug. 11, 1953 Original Filed Jan. 5, 1949 INVENTOR. ZOLZZS flozg/as Kan/7 9 flMA/Wndw A-r TORNEYS- Patented Aug. 11, 1953 CARDBOARD BOX Lewis Douglas Young,

Island Providence, R. I., assignor to Douglas Young, Inc., a corporation of Rhode Continuation of application Serial No. 69,301,

January 5, 1949.

This

1953, Serial No. 343,922

4 Claims.

This application is a continuation of application Serial No. 69,301, filed January 5, 1949, now abandoned.

This invention relates to a cardboard box in which a spring hinge joins the body and cover sections of the box together.

One of the objects of the invention is to provide a light weight or thin hinge and a light weight or thin box and by addition of the hinge to the box stiffen both along the connection.

Another object of the invention is to provide a metal hinge on a cardboard box which may :be attached without disfigurin the outer surface of the box to an extent which will require a paper cover over the outer surface after the hinge is in place,

Another object of the invention is to provide attaching means for the hinge so as to avoid ugly projections which have heretofore been in use and show from the outside of the box.

Another object of the invention is to provide a spring hinge on a cardboard box which will give more snap of the cover in moving from open to closed position.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a perspective view of the cardboard box with my hinge in place with the cover shown in open position;

Figure 2 is a perspective view of a fragmental portion of the box showing the back of the box when in closed position;

Figure 3 is a perspective view of the hinge with the spring detached;

Figure 4 is a section on line 4-4 of Figure 3;

Figure 5 is a sectional view through the box showing the hinge in place on the box;

Figure 6 is a view similar to Figure 5 illustrating a paper cover as placed over the outside surface of the box to cover its hinge.

Figure 7 is a perspective view of the spring which is attached to the hinge.

In proceeding with this invention I provide from rather light weight stock a pair of metal plates which have eyes rolled upon edges to be hinged together. Each of the plates is provided with a plurality of holes spaced lengthwise from end to end, and from the edges of each of the holes a plurality of prongs project, which prongs may pass through the cardboard rear wall of the box with their points bent over to clinch the back or rear wall of the box and fasten the plate application March 23,

thereto. The points of these projections are so small that their protrusions through the rear wall are relatively not unsightly and thus no cover need be provided for the outer surface where the prongs may be seen.

A spring is attached to these plates 50 as to urge the plates one relatively to the other to move the cover either to open or closed position depending on the relative position of the plates.

With reference to the drawings, I have provided a body section I 0 and a cover section I I both of cardboard. The body section has a rear wall I2 while the cover section has a rear wall I3. When in closed position the edges of the rear walls I2 and I3 are in abutting relation. In order to maintain them in this relation one relative to the other, I have provided a hinge which is designated generally I4 and shown in perspective in Figure 3.

This hinge I4 comprises metal plates I5 and III which have eyes II and I8 rolled from the edges throughout a major portion of their length and which are positioned in alignment to receive a pintle pin I9 passing thru these eyes so as to hingedly relate the plates I5 and I6. To attach these plates to the rear walls of the sections I0 and II, I have provided a plurality of holes 20 at spaced points along the length of each of the plates, and from the edges of the holes 20 projections 2| extend, each hole being generally circular and having a plurality of such projections extending from the edge thereof and each projection being arcuate in cross section so as to stiffen the same. Four such projections are shown as r provided about each hole in the drawings, but it will 'be readily apparent that the number may be varied as occasion may require. The projections are evenly spaced about each hole..

The projections 2i are slightly outwardly flared and are of such a length that they will protrude thru the thickness of the rear walls I2 or I3 and after protruding thru the walls they will be deflected outwardly from the center of the hole 20 by striking as shown at 22 in Figure 5 or 6 so as to clinch the back wall securely drawing the plate firmly against the inner surface of the back wall and imbedding themselves in the outer surfaces of the rear wall as shown in Figure 5 or 6,- thus but a very small area covered by the points of the projections will be visible as shown in Figure 2. I find that in many cases it is unnecessary to cover the outer surface of the rear wall because of the rather inconspicuous ends 22 as shown in Figure 2. However, in some cases there is a covering 23 of paper over the outer surface provided as in Figure 6. At the same time the wall is thickened in the holes as shown at 29.

Each of the plates and I6 is provided with an opening which provides at one edge a lip 24 as seen in Figure 3, which may be deflected by being struck outwardly from the plane of the plate, and an arcuate spring 25 as shown in perspective in Figure 7 has its ends inturned as at 26 so as to engage these lips to regulate the movement of the cover in its movement to an open position just slightly beyond 90 degrees from its closed position as shown in Figure 1 where the end portions of the arc of the spring 25 tends to force the cover in an opening direction to the limit provided by the inturned ends 26 while after the cover is swung beyond approximately an angle of 45 degrees to the plane of the body, the spring ends swing the cover towards closed position and tend to hold the edge surfaces of the walls of the body and cover in abutting relation as shown in Figures 2, 5, and 6.

The two plates attached in hinged relation and complete with spring are attached to the body and cover sections at the same time by placing the same on an anvil and striking one hammer blow.

The above manner of fastening the hinges in position serves to very effectivel attach the hinges and by having a plurality of points attached to hold the plates against the rear walls of the box, both the hinge and rear walls are stiffened to a substantial extent as one supports the other. The snap which is provided by reason of this stiffness is very much increased and the plates which are made of rather soft material become the desired stiffness after attached to the box.

I claim:

1. In a cardboard box a body section and a cover section, each section having vertically disposed rear walls with their edges abutting, a

metal plate extending along the inner surface of the rear wall only of each section, each plate having a plurality of holes along its length with a plurality of integral projections along the edge of each hole embedded in the rear wall over which the plate extends with the free ends of the projections deflected outwardly in a plurality of difierent directions and clinched over the outer surface of the rear wall of the section and firmly securing the plate to the section, said plates having their adjacent edges hingedly attached together, each of said plates having intermediate its length an opening providing a lip, an arcuate spring with inturned ends engaging said lips and urging said plates in an opening or closing direction depending on the relative position of the plates.

2. In a cardboard box as is claim 1 wherein the plates have their adjacent edges hingedly attached together throughout the major portion of their length.

3. In a cardboard box as in claim 1 wherein the projections along the edge of each hole are arcuate in cross section.

4. In a cardboard box as in claim 1 wherein each hole is generally circular and the projections along the edge of each hole are arcuate in cross section.

LEWIS DOUGLAS YOUNG References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 649,761 Saltzkorn May 15, 1900 800,243 Popple Sept. 26, 1905 1,430,029 Rhodes Sept. 26, 1922 1,552,916 Farrington Sept. 8, 1925 1,626,301 Rhodes Apr. 26, 1927 2,174,430 Valentine Sept. 26, 1939 2,206,918 Powell July 9, 1940 

